even though teresa mayfield's husband scott had been very cooperative with investigators, they wonderedwas something he wasn't telling them. here again with "secrets in a small town" is keith morrison. >>> it's a funny thing about secrets. they can only stay hidden for so long. especially in a little place like moundville. and it didn't take very long for sheriff ellis and boyd to stumble across more. >> scott had a young lady to come pick up the boys. >> it was only later when the fog of grief lifted that one of teresa's relatives wondered to police who was that woman hanging around the day teresa died? ellis and boyd tracked her down and what they discovered, well, that changed everything. or seemed to. the person they were talking to was scott's mistress. >> she was under the impression that scott was not married at that time. >> what did you make of that? >> we knew that wasn't correct. >> a love triangle, jealous home wrecker kills wife, claims husband? no, not even close. scott's girlfriend thought his marriage was over. his divorce finalized. >> what was her reaction to getting t